Compare PDF
Compare the text of two PDFs and see every added and removed line.
Your files stay on this device
Good to know: Add the original first, then the new version.
or drop them here, or paste with Ctrl+V
PDF · up to 2 files · stays on your device
How to use Compare PDF
- 1Add your files (you can reorder them) — drag and drop or tap to choose. Accepted: PDF.
- 2No settings needed.
- 3Press “Compare”. Processing happens on your device.
- 4Download your HTML report.
About this tool
Compare the text of two PDFs and see every added and removed line. Your files are processed locally in your browser, so they're never uploaded, queued or stored — which also makes it fast. It's part of our free pdf tools, which work together — you can pass the result straight into related tools below.
- Accepts
- Gives you
- HTML report
- Files at once
- Up to 2 (combined into one result)
- Processed
- On your device
Frequently asked questions
Is Compare PDF free?
Yes. There's no sign-up, no watermark and no usage limit.
Are my files uploaded to a server?
No. Compare PDF runs entirely in your browser. Your files never leave your device and nothing is stored — close the tab and everything is gone.
Which file types can I use?
PDF. Files are checked by their actual content, not just the extension, so renamed or damaged files are caught early.
Is there a file size limit?
Each file can be up to 200.0 MB, and you can process up to 2 files at once. Because processing uses your device's memory, very large files work best on a computer.
Does it work on my phone?
Yes. It works in modern mobile browsers on Android and iPhone. Heavier jobs (large PDFs, OCR) are faster on a computer.
Are there any limitations?
Add the original first, then the new version.